Robert coyle



No. 612,827. Patentedfict. 25, I898. 'R. BOYLE.

ROTARY PLOW.

(Application filed Aug. 10, 1897.)

(No Model.)

WITNESSES //v VE/VTOI? 7 94 fi0erl C og Z6,

. W BY 2o line 2 2 in Fig. 1; and Fig. 3, a detail rear ele- UNITEDSTATES PATENT QFFTCE.

ROBERT COYLE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO ELIAS (J. ATKINS, OFSAME PLACE.

ROTARY PLOW.

SPECIFICATION forming part of Letters Patent No. 612,827, dated October25, 1898.

Application filed August 10, 1897.

.To all whom it may concern.-

Be it known that 1, ROBERT COYLE, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and -useful Improvements in Rotary Plows, ofwhich the following is a specification.

The object of my said invention is to provide means whereby the operatormay easily shift the position of the land carrier-wheel relatively tothe other plow parts; and it consists in the combination and arrangementof devices hereinafter described and claimed.

Referring to the accompanying drawings, which are made a part hereof andon which similar letters of reference indicate similar parts, Figure 1is a top or plan view of a rotary plow embodying my present invention;Fig. 2, a View of the central portion thereof, on an enlarged scale, asseen from the dotted vation as seen from the dotted line 3 3 in Fig. 2.

In said drawings the portions marked A represent the main frame part ofthe plow; B, the axle; O, the staggered furrow carrier-wheel; D, theland carrier-wheel; E, an arm on which said wheel is mounted, and F ascrew-shaft by which the arm carrying it is operated.

The frame A is preferably of a form similar to that shown in LettersPatent No. 543,118, granted Atkins and Roberts July 23, 1895, andcarries an arm A and the plows A and A as well as the various otherparts of the plow mechanism.

The shaft B is secured to the frame A and to an arm A thereon. It isbent at a central point, so that one end is in advance of the other, asindicated in Fig. 1. Strongly secured to the outer end thereof is abracket B. Said bracket is also preferably secured to the arm A on theframe A.

The staggered furrow or guide carrier-wheel O is of a usual form. Theconstruction shown is that wherein this wheel is adapted to be raisedand lowered in operation, so as to run either in the bottom of a furrowor on the level surface, as may be desired, and includes a slide, whichcarries its spindle, and a rack Serial No. 647,671. (No model.)

and lever for operating the same. It is shown in its raised position, aswhen positioned to run on the same level as the land carrierwheel D.Said land carrier-wheel is also of a usual and well-known constructionand is mounted on its spindle D, which is carried from the arm E. Saidwheel D has a long hub d, with a suitable bearing-face, which bearsagainst a similar face on said arm, as indicated in Fig. 1.

The arm E is pivoted 011 the shaftB and carries the spindle D. Itextends beyond said shaft B and develops into a screw-gear segment E, asshown most plainly in Fig. 2.

The shaft F is mounted in a long sleevelike hearing in the bracket 13'and carries the worm f on its end, which engages with and is adapted tooperate the segment E on the end of the arm E. It is provided at theupper end with the hand-wheel F, by which it may be convenientlyoperated and which is located near the drivers seat S.

By means of this construction and arrangement it is possible for thedriver to easily cause the land carrier-wheel D to occupy such positionrelative to the other parts of the plow as may be desired and withoutdismounting and to accurately adjust said parts in relation to eachother, while they will remain in adjusted position without other meansof retention than the natural friction of the parts, all as will bereadily understood.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. In a rotary plow, thecombination, of the frame, the plows carried thereby, the axle, thecarrier-wheels, an arm E formed with a hub or bearing between its endsand mounted by I means thereof to rock on the end of said shaft andcarrying a spindle on one end on which the land carrier-wheel is mountedand having a segmental rack formed on its other end with which a worm onan operating-shaft F engages, and said operating-shaft F mounted in asuitable supporting-bracket, whereby said land carrier-wheel may bemanipulated to raise andlower the plow-frame, independently of the wheelon the opposite side of the frame, substantially as set forth.

2. The combination, in a rotary plow, of the frame having the arm A thebent axle B, the bracket B on the end thereof, the arm E pivoted on theend of said axle and having a segment 011 one end and a bearing for theearrier-wheel spindle on the other, said spindle, the carrier-wheelmounted thereon, and the screw-shaft F mounted in said bracket andhaving the worm f which engages with said segment, the whole beingarranged and oper- 1o ating substantially as shown and described.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 6th day of August, A.- D. 1897.

ROBERT COYLE. [L.

Witnesses:

CHESTER BRADFORD, JAMEs A. WALSH.

